5-Iodo-4-methoxy-2-(methylthio)pyrimidine CAS 120809-42-9
| CAS No. | 120809-42-9 |
| Molecular Formula | C6H7IN2OS |
| Molecular Weight | 282.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
5-Iodo-4-methoxy-2-(methylthio)pyrimidine (CAS 120809-42-9), molecular formula C6H7IN2OS and molecular weight 282.10 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to an amide group, sulfur-containing functionality, a hydroxyl group, an ether linkage, iodine substitution, an aromatic ring system, 5-Iodo-4-methoxy-2-(methylthio)pyrimidine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 282.10 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 5-Iodo-4-methoxy-2-(methylthio)pyrimidine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H7IN2OS |
| Molecular Weight | 282.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | I-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Iodo Standards
- 1-Iodo-2-(methylsulfonyl)benzene (CAS 110483-14-2)
- 2-Iodo-4,5-dimethylthiophene-3-carboxylic acid (CAS 1261635-51-1)
- 5-Iodo-3-methyl-2-(methylthio)pyrimidin-4(3H)-one (CAS 134039-53-5)
- 1-Iodo-3-(methylsulfonyl)benzene (CAS 139769-20-3)
- 1-Iodo-4-(methylsulfonyl)benzene (CAS 64984-08-3)
- 5-Iodo-4-methyl-2-(methylsulfinyl)pyrimidine (CAS 2091197-77-0)
- 5-Iodo-6-methyl-2-methylsulfanyl-1H-pyrimidin-4-one (CAS 76510-64-0)
- Methyl 3-iodo-4-methylthiophene-2-carboxylate (CAS 845878-92-4)
Recommended Standards
- 2-Bromo-N,N-dimethyl-5-(trifluoromethyl)benzenemethanamine (CAS 1199774-68-9)
- (R)-1-(3-bromo-5-(trifluoromethyl)phenyl)propan-1-amine (CAS 1213894-59-7)
- N-(2-Bromo-5-(trifluoromethyl)benzyl)ethanamine (CAS 1175526-32-5)
- 1-(3-bromophenyl)-4,4,4-trifluorobutan-2-amine (CAS 1250792-21-2)
- 2-Bromo-4’-(tert-butyl)acetophenone (CAS 30095-47-7)
- 4-Chloro-3-(difluoromethyl)-2-methoxypyridine (CAS 1806760-89-3)
- 3-Amino-N-(4-methyl-1,3-oxazol-2-yl)-6-(pyridin-4-yl)-4-(trifluoromethyl)thieno[2,3-b]pyridine-2-carboxamide (CAS 626225-38-5)
- Tert-butyl n-(4-ethoxybutyl)carbamate (CAS 1101136-17-7)
- methyl 4-amino-6-methylpyrimidine-2-carboxylate (CAS 1520279-43-9)
- Cefuroxime Impurity 82 (CAS CATO-C4X-124582)
- 2-Aminopropane-1-thiol (CAS 10229-29-5)
- 4-Amino-6-cyano-2-(difluoromethyl)pyridine-3-methanol (CAS 1806796-41-7)
- 5-(1-Phenylcyclopropyl)-1,3,4-thiadiazol-2-amine (CAS 88742-93-2)
- Stresscopin-Related Peptide (human) (CAS 348626-74-4)
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